.containerDiv {
    width: 400px;
    position: absolute;
    top: 0;
    left: 335px;
    border: 1px solid #E5E5E5;
    background-color: white;
    padding: 10px;


    &::before,
    &::after {
        position: absolute;
        content: "";
    }

    &::before {
        border: 8px solid transparent;
        border-right-color: #E5E5E5;
        left: -16px;
        top: 12px;
    }

    &::after {
        border: 7px solid transparent;
        border-right-color: white;
        left: -14px;
        top: 13px;
    }
}